Found mostly in rectangular shape, the fire bricks are basically used to build the interiors of pits, furnaces and ovens. As these bricks are heat resistant, it is quite useful to build hearths in homes and other places. To make the bricks tensile and heat resistant, it is baked in clay and heated in high temperatures so that it has the capability to withstand very high temperatures. Most of these bricks contain aluminum oxide and silicon dioxide. Various types of bricks are manufactured for different purposes. Each variety has unique features, qualities and drawbacks. So it is quite necessary to identify the type of brick and its features before installing it for any purpose.
Clay bricks: Clay bricks are mostly used to decorate the outer part of the hearths, ovens and furnaces as it has limited capability to withstand high temperatures. Though it is baked in high temperatures, it is susceptible to cracks. Therefore it is seldom used to build the interior parts of ovens. Clay bricks require constant replacements compared to the other types of bricks. It can be found in different sizes and shapes. Clay bricks are quite inexpensive and can be bought from online shops.
Insulation bricks: These ordinary bricks are used to build the interior surfaces of ovens and furnaces. It absorbs heat and prevents it from escaping the surfaces. The insulation bricks are light in weight. It is also less expensive in comparison to the high duty bricks.
Dense and heavy bricks: Another common variety of fire brick includes the dense and heavy variety which contains silica and alumina. These bricks are tensile and can be used for a variety of purposes. It is quite durable and strong. Heavy bricks are available in different sizes and shapes to build different types of ovens and furnaces. It is used for both commercial and domestic purposes.
High duty bricks: This variety has the ability to withstand very high temperatures as it contains 50% of alumina. It is the most expensive varieties of bricks used to build the interiors of furnaces. However, it can seldom be used to build ovens as it withholds high temperature which can burn food items.
Important Applications and Huge Varieties
Fire bricks are used for a wide variety of purposes. It finds application in various fields including aluminum and steel plants. It is also used as thermal shields in space shuttles. Pizza ovens are also built of these types of bricks.
Various types of bricks are available through online stores which include acid proof blocks, silicon carbide blocks, zircon blocks, constructional high alumina blocks, industrial high alumina blocks, low alumina blocks, fly ash blocks, ceramic and customized blocks. In addition to these varieties, there are electric resistant bricks available in many industries which are listed online. Most of these products are available at wholesale price rates too.
Today fire bricks are manufactured with the use of machines. There are different types of brick manufacturing machines made available in many of the online stores at various price rates.